Hello,
I'm trying to modeling a rotating machine. So I've to use an fluid fluid interface for the rotor stator connection, I'm using a GGI connection.
But I've got somme troubles when I'm looking at the vorticity. As you can see on the image, the vorticity is not well transmit at the interface.

Vorticity is not "transmitted" at the interface. mass, momentum and energy is. The vorticity is calculated from the velocity field and I suspect the vorticity calculation is not exact adjacent to the boundary.

If you look at the pressure, velocity or temperature fields they should be continuous as they are "transmitted" at GGIs.